build docker image

.github/workflows/build-docker-image.yml

@@ -0,0 +1,49 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      # setup node
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '20.8.1'
+      # install dependencies
+      - name: Install dependencies
+        run: |
+          yarn install --frozen-lockfile
+      # build application
+      - uses: mansagroup/nrwl-nx-action@v3
+        with:
+          targets: build-with-frontend
+          projects: hotel-management-system-backend
+          affected: false
+      # build and push to dockerhub
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Setup docker buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          platforms: linux/amd64, linux/arm64/v8
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/hotel-management-system:latest
+          file: ./dockerfile
+          context: .